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J/ApJ/664/1102   Radial velocity survey of Cyg OB2 association  (Kiminki+, 2007)

A radial velocity survey of the Cyg OB2 association. Kiminki D.C., Kobulnicky H.A., Kinemuchi K., Irwin J.S., Fryer C.L., Berrington R.C., Uzpen B., Monson A.J., Pierce M.J., Woosley S.E. <Astrophys. J., 664, 1102-1120 (2007)> =2007ApJ...664.1102K
ADC_Keywords: Associations, stellar ; Stars, early-type ; Radial velocities Keywords: binaries: close - binaries: general - binaries: spectroscopic - stars: early-type - stars: kinematics - surveys - techniques: radial velocities Abstract: We conducted a radial velocity survey of the Cyg OB2 association over a 6yr (1999-2005) time interval to search for massive close binaries. During this time we obtained 1139 spectra on 146 OB stars to measure mean systemic radial velocities and radial velocity variations. We spectroscopically identify 73 new OB stars for the first time, the majority of which are likely to be association members. Description: Between 1999 July and 2005 October we observed 183 stars in the direction of the Cyg OB2 association with the echelle spectrographs at the Lick 3m and Keck 10m telescopes, the Hydra spectrograph at the WIYN 3.5m telescope, the Wyoming Infrared Observatory (WIRO) fiber-bundle spectrograph (WIRO-Spec), and the WIRO-Longslit spectrograph at the WIRO 2.3m telescope. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 115 146 Early type stars in the direction of Cyg OB2 table3.dat 39 37 Non-OB Stars table4.dat 32 907 Complete table of observations and radial velocities table5.dat 58 120 Derived radial velocity parameters
See also: J/AJ/101/1408 : Massive stars in Cyg OB2 (Massey+ 1991) J/ApJS/184/84 : Massive Star Forming Region Cygnus OB2 (Wright+, 2009) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [MT91] Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408) 5- 12 A8 --- SpTypL Spectral classification from literature 14- 23 A10 --- SpType Spectral classification from this work 25- 26 I2 h RAh Hour of Right Ascension (J2000) 28- 29 I2 min RAm Minute of Right Ascension (J2000) 31- 35 F5.2 s RAs Second of Right Ascension (J2000) 37 A1 --- DE- Sign of the Declination (J2000) 38- 39 I2 deg DEd Degree of Declination (J2000) 41- 42 I2 arcmin DEm Arcminute of Declination (J2000) 44- 47 F4.1 arcsec DEs Arcsecond of Declination (J2000) 49- 52 F4.1 mag AV Calculated visual extinction (1) 54- 58 F5.2 mag Vmag Massey & Thompson (1991, J/AJ/101/1408) V band magnitude 60- 64 F5.2 mag VMAG Absolute V band magnitude (2) 66- 69 F4.2 mag (B-V) Massey & Thompson (1991, J/AJ/101/1408) measured (B-V) color index 71- 75 F5.2 mag (B-V)0 Wegner (1994MNRAS.270..229W) intrinsic (B-V) color index 77- 80 F4.1 solMass MPD Initial mass (4) 82- 86 F5.1 solMass M0 Current mass (3) 88- 91 F4.1 mag DM True distance modulus 93- 95 A3 --- Note Additional note (5) 97-113 A17 --- PAct Photometric activity found in literature 115 A1 --- r_PAct Reference for PAct (6)
Note (1): Calculated visual extinction in magnitudes using Massey & Thompson (1991, Cat. J/AJ/101/1408) colors, Wegner (1994MNRAS.270..229W) intrinsic colors, and RV=3.0. Note (2): from Humphreys & McElroy (1984ApJ...284..565H) (B stars) and Martins et al. (2005A&A...436.1049M) (O stars) Note (3): Initial masses interpolated from the stellar evolutionary models of Lejeune & Schaerer (2001, cat. VI/102) Note (4): Current masses from Martins et al. (2005A&A...436.1049M) and Drilling & Landolt (2000, in Astrophysical Quantities, p. 381). Note (5): Note as follows: n = new early-type classification b = a close visual double, unresolved in our data Note (6): Literature reference for photometric activity as follows: 1 = Kukarkin & Kholopov, 1982, Cat. II/140 2 = Pigulski & Kolaczkowski, 1998, Cat; J/MNRAS/298/753 3 = Romano, 1969MmSAI..40..375R 4 = Rios & DeGioia-Eastwood, 2004AAS...205..905R
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [MT91] Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408) 5- 6 I2 h RAh Hour of Right Ascension (J2000) 8- 9 I2 min RAm Minute of Right Ascension (J2000) 11- 15 F5.2 s RAs Second of Right Ascension (J2000) 17 A1 --- DE- Sign of the Declination (J2000) 18- 19 I2 deg DEd Degree of Declination (J2000) 21- 22 I2 arcmin DEm Arcminute of Declination (J2000) 24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000) 29- 33 F5.2 mag Vmag Massey & Thompson (1991, J/AJ/101/1408) V band magnitude 35- 39 A5 --- SpType Spectral classification
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [MT91] Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408) 5- 16 F12.4 d HJD Heliocentric Julian date of the observation 18- 25 F8.3 km/s HRV Heliocentric radial velocity 27- 32 F6.3 km/s e_HRV The 1σ uncertainty on HRV
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [MT91] Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408) 5- 11 A7 --- SpType Spectral classification as determined/accepted by this survey 13- 14 I2 --- Nobs Number of usable observations 16- 21 F6.2 km/s Vavg Weighted average heliocentric velocity 23- 27 F5.1 km/s Vmid Simple average of the largest and smallest observed heliocentric velocity 29- 32 F4.1 km/s Vh Measure of the velocity semiamplitude 34- 37 F4.1 km/s Vrms rms heliocentric velocity dispersion of all observations 39- 42 F4.1 km/s e_Vavg Mean velocity uncertainty, averaged over all observations 44- 48 F5.3 -- Prob Probability that χ2 would be exceeded by chance, given {vu}=Nobs-1 degrees of freedom 50- 57 A8 --- Bin Binarity (1) 58 A1 --- n_Bin [ab] note on type (2)
Note (1): Spectroscopic activity as follows: SB1 = probable single-lined variability [P≤0.01] SB1? = possible single-lined variability [0.01<P≤0.04] SB2? = possible double-lined binary signature SB2 = definite double-lined signature Note (2): Note as follows: a = Spectroscopic period of P=21.908days (De Becker et al. 2004A&A...424L..39D) b = Photometric period of P=1.46days (Rios & DeGioia-Eastwood, 2004AAS...205..905R)
History: From electronic version of the journal References: Kiminki et al. Paper II. 2008ApJ...679.1478K Kiminki et al. Paper III. 2009AJ....137.4608K Kiminki et al. Paper IV. 2012ApJ...747...41K Kiminki et al. Paper V. 2012ApJ...751....4K Cat. J/ApJ/751/4 Kobulnicky et al. Paper VI. 2012ApJ...756...50K
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 29-Aug-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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